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通过全质调节NS5A对达克拉塔斯维尔耐药性C型肝炎的复敏化
Jin-Hua Sun1, Donald R O'Boyle1, Robert A Fridell1
1Department of Virology, Bristol-Myers Squibb Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, USA.
Nature
|November 5, 2015
概括
抗肝炎C病毒 (HCV) 直接作用的抗病毒达克拉塔斯维尔 (DCV) 在与NS5A抑制剂类似物结合时显示出增强的功效. 这种组合克服了耐药性,提高了治疗慢性HCV感染的疗效.
科学领域:
- 病毒学
- 肝病学
- 药理学
背景情况:
- 全球有超过1.7亿人感染C型肝炎病毒.
- 直接作用抗病毒药物 (DAA) 组合疗法有可能消除HCV.
- HCV非结构蛋白5A (NS5A) 对于病毒复制至关重要,也是达克拉萨维尔 (DCV) 等强效抑制剂的标.
研究的目的:
- 了解达克拉塔斯维尔 (DCV) 的异常功效.
- 研究将DCV与NS5A抑制剂类似物 (Syn-395) 的协同效应.
- 探索对HCV联合治疗和耐药性的影响.
主要方法:
- 对HCV NS5A变体的DCV和Syn-395活性进行体外评估.
- 对抗耐药NS5A变体的组合治疗疗效的评估.
- 在感染HCV的基马鼠模型中进行体内验证.
主要成果:
- 每个DCV和Syn-395对某些NS5A耐药变体的活性有限.
- 联合使用DCV和Syn-395显示出超过1000倍的功效增强,使活性恢复到皮科马尔 (pM) 范围.
- 在体内证实了协同作用,这表明NS5A蛋白分子之间的通信.
结论:
- 结合NS5A抑制剂可以克服耐药性并显著增强抗HCV活性.
- 这种协同作用表明NS5A的结构变化.
- 这种方法为HCV联合治疗提供了更好的选择,并加深了对NS5A功能的理解.
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